Electromagnetic relay armature with limiting structure
By introducing limit strips and movable blocks into the armature structure of the electromagnetic relay, the flexible limit of the armature is achieved, solving the problem that the armature is prone to minor shifts in vibration or impact environments, improving the contact reliability and impact resistance of the relay, and extending the service life.
Patent Information
- Application Number
- CN202421845628.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-01
AI Technical Summary
In the environment of frequent vibration or impact, the non-rigid connection between the armature and the yoke can easily lead to a slight shift of the armature, affecting the precise butt of the contacts and reducing contact reliability. In addition, the bending part of the yoke is prone to fatigue deformation due to repeated stress, affecting the long-term stable operation and service life of the relay.
An electromagnetic relay armature with a limit structure is designed. By setting a limit bar and a movable block on the yoke, the limit block flexibly presses on the top of the armature body under the action of the elastic pad to prevent the armature from lateral deviation when impacted by external force.
This design ensures the correct positioning of the contacts of the relay under various operating conditions, improves the contact reliability of the contacts, enhances the impact resistance of the relay, extends the service life, and prevents fatigue deformation of the yoke.
Smart Images
Figure CN222896657U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electromagnetic relays, in particular to an electromagnetic relay armature with a limiting structure. Background Art
[0002] An electromagnetic relay is an electronic control device, and the armature is a key component in the electromagnetic relay. When the coil of the electromagnetic relay is energized, a magnetic field is generated around the coil, which attracts the armature. The armature is usually made of soft iron material, which can be easily magnetized and then demagnetized. When the armature is attracted by the electromagnet, it moves and connects or disconnects with the fixed contacts, thereby controlling the connection or disconnection of the main circuit. Once the coil is de-energized, the magnetic field disappears, and the armature returns to its original position under the action of the return spring, ready for the next operation.
[0003] Existing electromagnetic relays generally use springs or reeds as elastic connection elements between the armature and the yoke. Although this design facilitates the attraction and release of the armature, in practical applications, especially in environments with frequent vibrations or shocks, the problems of this non-rigid connection method are becoming increasingly prominent. First, the impact force may cause the armature to shift slightly on the yoke, affecting the precise docking of the contacts, reducing the contact reliability, and even causing circuit failure in severe cases. Secondly, the bending part of the yoke is prone to fatigue deformation due to repeated stress on the material, further affecting the long-term stable operation and service life of the relay. Utility Model Content
[0004] The purpose of the utility model is to provide an electromagnetic relay armature with a limiting structure to solve the problem raised in the above-mentioned background technology that the existing electromagnetic relays mostly use springs or reeds to connect the armature and the yoke. Because in an environment with large vibration or frequent impact, this elastic connection is easy to cause the armature to move slightly, resulting in inaccurate contact docking and affecting circuit reliability, and the bending part of the yoke is prone to fatigue deformation due to repeated stress, which damages the long-term stability and life of the relay.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electromagnetic relay armature with a limiting structure, comprising a yoke, an armature body is movably provided at the top end of the yoke, and a support block is provided on the outer side of the upper end of the yoke, a spring is connected between the support block and the rear end of the armature body, a support rod is provided at the outer end of the support block, a limiting strip is movably provided at the top end of the support rod and is placed on the top of the armature body, a movable block that can be displaced laterally is provided inside the limiting strip, and a limiting block is movably provided at the bottom end of the movable block.
[0006] Preferably, a transverse opening is provided inside the limit strip, and guide blocks are provided on both side outer walls of the movable block, and guide grooves matching the guide block structure are provided on both side inner walls of the transverse opening of the limit strip.
[0007] Preferably, pull shafts penetrating the limit strip are provided on both sides of the limit block, and lifting shafts are connected between the top ends of the pull shafts.
[0008] Preferably, a pressing block is provided on the top of the limiting block, and a movable opening matching the pressing block structure is provided inside the bottom end of the movable block, and an elastic pad is provided at the movable opening at the bottom end of the movable block.
[0009] Preferably, the inner end of the limit bar is movably connected to the top end of the support rod through a pin, and an elastic sheet is connected between the top of the inner end of the limit bar and the top end of the support rod.
[0010] Preferably, the bottom end of the support rod is provided with a rotating rod movably inserted into the outer end of the support block, and a fixing screw is inserted into the front side of the support block through a screw sleeve, and the outer wall of the rotating rod is surrounded by a plurality of threaded holes that match the fixing screw structure.
[0011] Compared with the prior art, the utility model has the following beneficial effects: the electromagnetic relay armature with a limiting structure can ensure the correct positioning of the contacts of the relay under various working conditions, improve the contact reliability of the contacts, and enhance the overall impact resistance of the relay, thereby extending its service life. The electromagnetic relay armature with a limiting structure is provided with a limiting strip on the top, and the limiting strip can drive the limiting block to move laterally to a suitable position through the movable block provided inside, so that the limiting block can be flexibly pressed against the appropriate position on the top of the armature body for limiting, effectively preventing the armature body from lateral displacement when subjected to external force impact. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the armature structure of an electromagnetic relay with a limiting structure of the utility model;
[0013] Figure 2 This is a schematic diagram of the outer end structure of a limit bar of an electromagnetic relay armature with a limit structure according to the utility model;
[0014] Figure 3 The utility model is an electromagnetic relay armature with a limit structure Figure 1 The enlarged structural diagram at A in the middle;
[0015] Figure 4 The utility model is a schematic diagram of the connection structure of the movable block and the limit bar of the electromagnetic relay armature with a limit structure.
[0016] In the figure: 1. yoke; 2. armature body; 3. support block; 4. spring; 5. support rod; 6. elastic sheet; 7. limit strip; 8. movable block; 9. limit block; 10. lifting shaft; 11. pulling shaft; 12. pressure block; 13. elastic pad; 14. rotating rod; 15. fixing screw; 16. guide block. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] See also Figure 1-4The utility model provides a technical solution: an electromagnetic relay armature with a limiting structure, comprising a yoke 1, a yoke body 1 consisting of an integrated structure of a horizontal part and a vertical part, and a coil is installed inside the yoke body 1, an armature body 2 is movably provided at the top of the yoke 1, and a support block 3 is welded and fixed on the outer side of the upper end of the yoke 1, a spring 4 is connected between the support block 3 and the rear end of the armature body 2, a support rod 5 is provided at the outer end of the support block 3, a limiting strip 7 is movably provided at the top of the support rod 5 and is arranged on the top of the armature body 2, a movable block 8 which can be displaced laterally is provided inside the limiting strip 7, a limiting block 9 is movably provided at the bottom end of the movable block 8, the limiting block 9 is a rectangular block structure and a rubber pad is bonded and fixed on the bottom wall, and the yoke 1 of this structure and the armature body 2 are connected by a support rod 5, and a limiting strip 7 is arranged at the top of the armature body 2, and a movable block 8 which can be displaced laterally is provided inside the limiting strip 7, and a limiting block 9 is movably provided at the bottom end of the movable block 8, and the limiting block 9 is a rectangular block structure and a rubber pad is bonded and fixed on the bottom wall, and the yoke 1 of this structure and the armature body 2 are connected by a support rod 5, and a limiting strip 7 is arranged at the top of the armature body 2, and a limiting strip 7 is arranged at the top of the armature body 2, and a limiting strip 7 is arranged at the bottom end of the movable block 8, and the limiting block 9 is a rectangular block structure and a rubber pad is bonded and fixed on the bottom wall, and the yoke 1 of this structure and the armature body 2 are connected by a support rod 5, and a limiting strip 7 is arranged at the When the block 3 and the spring 4 are movably installed inside the relay for use, the support rod 5 can be synchronously installed on the outer end of the support block 3 so that the limit strip 7 is placed above the armature body 2, and the movable block 8 can make the limit block 9 flexibly press against the appropriate position on the top of the armature body 2 by lateral displacement on the limit strip 7, so as to play the role of elastic limiting for the armature body 2, effectively preventing the lateral displacement of the armature body 2 when it is impacted by external force, thereby ensuring the correct positioning of the contacts of the relay under various working conditions, improving the contact reliability of the contacts, and reducing circuit failures caused by position deviations. In addition, the structural design of the support rod 5 and the limit strip 7 significantly enhances the overall impact resistance of the relay, prolongs its service life, and prevents the bending part of the yoke 1 from being repeatedly stressed by the material. It is easy to produce fatigue deformation and affect the long-term stable operation and service life of the relay. A transverse opening is provided inside the limit strip 7, and the outer walls on both sides of the movable block 8 are welded and fixed with guide blocks 16 of T-shaped structure, and the inner walls on both sides of the transverse opening of the limit strip 7 are provided with guide grooves matching the guide block 16 structure. The movable block 8 of this structure can slide in the guide groove of the transverse opening of the limit strip 7 through the guide block 16 to perform transverse displacement, so as to improve the stability when driving the limit block 9 to shift. Pull shafts 11 running through the limit strip 7 are welded and fixed on both sides of the limit block 9, and the tops of the pull shafts 11 are connected with lifting shafts 10, and the joints between the lifting shafts 10 and the pull shafts 11 are welded and fixed. A pressure block 12 is welded and fixed on the top of the limit block 9, and the movable block The bottom of 8 is provided with an active opening that matches the structure of the pressure block 12, and the active opening at the bottom of the movable block 8 is provided with an elastic pad 13, and the elastic pad 13 can be made of elastic sponge material. The lifting shaft 10 of this structure can drive the two pulling shafts 11 to lift up to make the limit block 9 move upward. When the limit block 9 moves upward, it will drive the pressure block 12 to squeeze the elastic pad 13 in the active opening at the bottom of the movable block 8. In this way, the limit block 9 can be flexibly pressed at the appropriate position on the top of the armature body 2 under the elastic force of the elastic pad 13, so as to play the role of elastic limiting for the armature body 2. The inner end of the limit strip 7 is movably connected to the top of the support rod 5 through a pin shaft, and an elastic sheet 6 is connected between the top of the inner end of the limit strip 7 and the top of the support rod 5. The elastic sheet 6 is a thin metal material with a bending structure.The elastic sheet 6 of this structure can play a stable limiting role on the connection between the limit bar 7 and the support rod 5, and can also ensure that the limit bar 7 can smoothly cooperate with the armature body 2 to change the tilt angle. The bottom end of the support rod 5 is provided with a rotating rod 14 that is movably inserted into the outer end of the support block 3, and the front side of the support block 3 is inserted with a fixing screw 15 through a screw sleeve, and the outer wall of the rotating rod 14 is surrounded by a plurality of threaded holes that match the structure of the fixing screw 15. The support rod 5 of this structure can also be rotated on the support block 3 by the rotating rod 14 to adjust the limit bar 7 to a more suitable tilt angle position, and the fixing screw 15 can be fixed in the corresponding threaded hole on the outer wall of the rotating rod 14 by rotating in the screw sleeve, so as to play a role in quickly limiting the rotating rod 14.
[0019] Working principle: When using the electromagnetic relay armature with a limit structure, first, when the yoke 1 and the armature body 2 are movably installed inside the relay for use through the support block 3 and the spring 4, the support rod 5 is then installed on the support block 3 so that the limit strip 7 is placed above the armature body 2. When the support rod 5 is installed, the rotating rod 14 is rotated on the support block 3 to tilt until the limit strip 7 is adjusted to a suitable tilt angle during the tilting process of the support rod 5. Then the fixing screw 15 is rotated. The fixing screw 15 can be fixed in the threaded hole on the outer wall of the rotating rod 14 by rotating in the threaded sleeve on the support block 3 to limit and fix the rotating rod 14. At this time, the movable block 8 is laterally displaced on the limit strip 7 for adjustment. Adjust the position of the limit block 9, and when the movable block 8 moves, it can drive the guide block 16 to slide in the guide groove of the horizontal opening of the limit strip 7. At the same time, pull the lifting shaft 10, and the lifting shaft 10 can drive the two pulling shafts 11 to lift up to make the limit block 9 move upward. When the limit block 9 moves upward, it will drive the pressure block 12 to squeeze the elastic pad 13 in the movable opening at the bottom of the movable block 8 until the pressure block 12 moves to a suitable position, release the lifting shaft 10, and the limit block 9 can be flexibly pressed at a suitable position on the top of the armature body 2 under the elastic force of the elastic pad 13, so as to elastically limit the armature body 2 and prevent the armature body 2 from lateral displacement when it is impacted by external force, which affects the correctness of the contact point, thereby completing a series of tasks.
[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. An electromagnetic relay armature with a limit structure, comprising a yoke (1), an armature body (2) movably provided at the top end of the yoke (1), a support block (3) provided on the outer side of the upper end of the yoke (1), a spring (4) connected between the support block (3) and the rear end of the armature body (2), characterized in that: The outer end of the support block (3) is provided with a support rod (5), the top end of the support rod (5) is movably provided with a limit bar (7) placed on the top of the armature body (2), the interior of the limit bar (7) is provided with a movable block (8) that can be displaced laterally, and the bottom end of the movable block (8) is movably provided with a limit block (9).
2. The electromagnetic relay armature with a limiting structure according to claim 1, characterized in that: The limiting strip (7) is provided with a transverse opening inside, and the outer walls on both sides of the movable block (8) are provided with guide blocks (16), and the inner walls on both sides of the transverse opening of the limiting strip (7) are provided with guide grooves matching the guide block (16) structure.
3. The electromagnetic relay armature with a limiting structure according to claim 1, characterized in that: Both sides of the limit block (9) are provided with a pull shaft (11) penetrating the limit strip (7), and a lifting shaft (10) is connected between the top ends of the pull shaft (11).
4. The electromagnetic relay armature with a limiting structure according to claim 1, characterized in that: A pressing block (12) is provided on the top of the limit block (9), and a movable opening matching the structure of the pressing block (12) is provided inside the bottom of the movable block (8), and an elastic pad (13) is provided at the movable opening at the bottom of the movable block (8).
5. The electromagnetic relay armature with a limiting structure according to claim 1, characterized in that: The inner end of the limiting strip (7) is movably connected to the top of the support rod (5) via a pin, and an elastic sheet (6) is connected between the top of the inner end of the limiting strip (7) and the top of the support rod (5).
6. The electromagnetic relay armature with a limiting structure according to claim 1, characterized in that: The bottom end of the support rod (5) is provided with a rotating rod (14) which is movably inserted into the outer end of the support block (3), and a fixing screw (15) is inserted into the front side of the support block (3) through a threaded sleeve, and the outer wall of the rotating rod (14) is surrounded by a plurality of threaded holes which match the structure of the fixing screw (15).